Diamonds are found in a wide variety of forms. Most are small and uneven. They can be used in factories but they are not very valuable. However, some diamonds are large and can be cut into beautiful gems. These gems can be worn as jewelry and are of great value. 钻石种类繁多，形状多样。大多数都是很小也不均匀，这些可用在工厂但并不贵重。然而，一些钻石很大，可以切成宝石。这些宝石作为珠宝佩戴，价值连城。 编辑推荐：2009年下半年公共英语考试报名汇总 名师指导公共英语阅读考试技巧 公共英语pets三级全真模拟试卷 公共英语pets二级语法讲解汇总